About Grandstream GSC3516 Surface Mount 2-WAY SIP POE Speaker Built in Mems Microphones

The Grandstream GSC3516 is a surface mount, 2-way SIP talk-back speaker built for offices, schools, warehouses, and any space that needs clear, reliable paging and intercom capability. Powered over Ethernet and packed with a 15W HD speaker plus an array of built-in MEMS microphones, it handles everything from facility-wide announcements to hands-free two-way conversations — all without running a separate power cable.

Key Features

• 15W HD Speaker — Delivers clear, room-filling audio across a wide frequency range of 110Hz—20,000Hz with up to 90dBA max SPL, so every announcement is heard loud and clear.
• Built-in MEMS Microphone Array — Three directional microphones with Multichannel Microphone Array Design (MMAD) and beamforming, plus one omnidirectional auxiliary microphone, give a pickup distance of up to 4.2 metres for reliable two-way communication.
• Full-Duplex Talk-Back — Advanced acoustic echo cancellation and an HD acoustic chamber make two-way conversations natural and clear, with no feedback or crosstalk.
• Flexible Paging Support — Compatible with SIP Paging, Multicast Paging, Group Paging, and Push-to-Talk (PTT), making it easy to set up zones and targeted announcements across a facility.
• PoE Powered with Dual-Band Wi-Fi — Runs on PoE/PoE+ (802.3af/802.3at) for a tidy, single-cable install, with integrated dual-band 802.11 a/b/g/n/ac Wi-Fi and Bluetooth for added connectivity flexibility.
• Broad Codec Support — Works with a wide range of audio codecs including Opus, G.722, G.711, and G.729, making it compatible with most SIP-based phone systems and IP PBX platforms.

Why Choose This Product?

The GSC3516 is a top-notch pick for businesses looking to build a proper paging and intercom setup without the complexity. It pairs well with other Grandstream devices and most SIP-based systems, and its clean surface-mount design fits neatly into just about any environment. Our Telrexperts are ready to help you design the right solution for your space.

What's in the Box

• Grandstream GSC3516 Talk-Back Speaker
• Mounting Hardware
• Quick Installation Guide